Can-capping tool



F.` COATES.

CAN CAPPING TOOL. APPLICATION man mm1. 1921.

1,421,673. Patented July 4, 1922i 2 SHEETS-SHEET l.

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I 2a- 2a 35 I 27 .5525, l if A 36/ F. COATES.

CAN CAPP ING TOOL. APPLICATION mw APR.21, 1921 Patented July 4, 1922.

2 SHEETS-SHEET 2 af-f@ NETE@ PATENT FREDERICK COATES, OF CINCINNATI, OHIO, ASSIGNOR TO FEDERAL PRODUCTS COIVI- PANY, OE CINCINNATI, OHIO, A CORPORATION OF OHIO.

CAN-CAPPING TOOL.

Application filed April 27, 1921.

T0 all 'w /Lo'm t may concern.'

Be it known that FREDERICK CoA'rns, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, has invented certain new and useful Improvementsv in Tools, of which the following is a specification.

This invention relates to paper or pulp can manufacturing machinery of the class used for heading paper and other like containers. f

The invention more particularly relates to a can capping or headingmachine.

Paper or pulp cans are frequently made with a cylindrical body closed by a head which is crimped over the upper edge of the body and secured in place vby glue or other suitable adhesive.

One important object of the present invention is to provide an improved and simplified machine for applying such heads.

The heads of such cans or containers are, for strength, usually pressed inward in manufacture so as to form a short hollow cylinder fitting closely within the mouth of y the can and provided with an outwardly eX- tending flange which forms thc part which is crimped against the outside of the can mouth.

A second important object of the invention is to provide a machine of improved construction for crimping rthe flange and equipped with a die fitting within the head to prevent collapse during the crimping operation.

I have also found that such cans are more. securely sealed if the flange on the head is forced inward after it is bent downward and that such action produces a smoother and more efficient crimp in the flange.

A third important object of this invention is to provide an improved machine of this class having means to force the crimping fiange downwardly and inwardly successively.

lith the above and other objects in view, the invention consists ingeneral of certain novel details of construction and combinations of parts hereinafter fully described, illustrated in the accompanying drawings and specifically claimed.

In the accompanying` drawings like char- Speccaton of Letters Patent.

Can Capping- Patcnted July 4, 1922.

Serial No. 464,832.

acters of reference indicate like parts in the several views, and

Figure 1 is a side elevation partly in section showing the machine in position to act on a can closure. Q

Figure 2 is a similar view showing the machine at the finish of its operation on a can.

Figure 3 is a section on the line III-III of Figure 2, a part being broken away to disclose certain details.

Figure 4 is a detail section on the line IV-IV of Figure 3.

The drawings forming part of this specification show one embodiment of the invention. However, other embodiments may be found desirable and accordingly the present disclosure is to be understood as typical of various embodiments of the device.

In the present instance there is shown a post or standard 10 which may be secured to a floor, a bench, a table or the like. Carried by the standard 10 is a table 11 having a boss 12 projecting` from its under side. Through this table and boss extends an opening 13 wherein a plunger 14 is slidably mounted for vertical reciprocation, being preferably held from rotation by a suitable key or spline 15. On the upper end of this plunger 14 is a can holderlG in the form of a hollow cylinder open at the top but closed at the bottom. On the lower end of the plunger is a head 17. Secured to the standard 10 is a bracket 1S to which is pivoted one end of an operating lever 19 carrying an anti-friction roller 2O which engages the under side of the head 17 so that raising the free end of the lever raises the cup or can holder 16.

Adjustable vertically on the standard 10 is an arm 21 which extends outwardly over the table 1l and terminates in a cuff 22 arranged in axial alinement to the plunger 14. This arm 21 is held in adjusted position by a bolt 23. Held within the cuff 22 by a set screw 24 is astem 25 which extends down'- ward below the cuff and supports the crimping head of the machine. This crimping head consists of a cylindrical body portion 26 having a boss 27 extending upward therefrom. The stem 25 extends downward through a suitable opening in the boss as shown and the body is secured to said stem by a set screw 28. In the under-side of the body 26 there is provided a frusto-conical recess 29 and within this recess is supported an annular series of crimping segments 3() each having its outer 'face inclined to correspond to the lat-eral wall of the frustoconical recess and its inner face perpendicular.

In the space with-in these rings is supported the can top supporting die 31 which is provided with a centrally disposed guide opening 32 wherein slidably fits the stem Extending slidably through suitable openings in the top of the body 26 are die supporting screws 33 which have their lower ends screwed into the die and their heads normally held against the upper surface of the body 26 by springs 34 each of which surrounds a respective screw between the body and die, seat recesses 35 being provided in the head and die for the ends of springs 34.

In order to keep the annular segments 30 in position, as well as to cause them to move vertically with the die 31, eachof these segments is provided with a groove 36 and the die is provided with a flange 3T slid'able inwardly and outwardly in the groove 36. Thus, when the segments move upward' the die moves upward' with them, said segments being, at the same time, forced towards the die by the action of the inclined wall of the frusto-conical recess. Y

In order to urge the segments 30 outwardly at all times the die is provided with radial pockets 38 and opposite each pocket 38 a shallow pocket 39 is formed in the respective segment to receive the end of compression usprings 4:0 held with the pockets 38.

In operation a can body C is dropped in the cup or holder 16 and the head H adjusted thereon.V It will be noted that the flange F of the head projects outwardly and downwardly as seen in Figure l, this being thus formed in the manufacture of the heads. The free end of the lever 19 is now raised. This carries the holder 16 upward and brings the flange F into engagement with the segments 30 which act, as the upward movement is continued', to force the flange downward. Continuing the upward movement brings the upper edge of the'holder 1G into engagement with the segments 30 at which time the hollow head II will fit on the die 31 thus being supported against collapse. Finishing the upward movement forces t-he segments upward and causes them to move inwardly to the position shown in Figure 2 thus completely crimping the flange against the can body.

There has thus been provided a simple and efficient device of the kind described and for the urpose specified. l Hving thus described the invention, what is claimed as new, is :e

1. In a machine of'theclass described, a

can supporting` head, a crimping head including means to primarily bend a can top flange downward and thereafter force said flange inward, and means to move one of said heads toward theother.`

2. In a machine of the class described, a can supporting head, a crimping head including means to engage a can top flange and force the same downward, said means being engageable by the can supporting head and arranged upon such engagement to move bodily inward, and means to move one of said heads toward the other. f'

3. In a machine of the class described, can supporting head, a crimping head including av body and a series of segmental bending` and crimping members supported by the body and guided for movement upwardly and inwardly of said body, said segmental members being arranged for engagement by the can supporting head, and means for moving one of said heads toward the other.

4;. In a machine of the class described, a can supporting head, a crimping head including a body and a series of segmental bending and crimping members supported by the body andguided for movement upwardly and inwardly of said body, said segmental members being arranged for engagement by the cansupporting head,- means to cause the segmental members to move in unison, and means for moving one of said heads toward the other.

5. In a machine of the'class described, a can supporting head, a crimping head including a body having a frusto-conical recess in one face thereof and an annular series of bending and crimping segments arranged within the recess and having their outer faces bevelled to conform to the lateral wall of the recess, means to hold the annular segments movablv in the recess, and means to move one of said heads toward the other.

6.'In a machine of the class described, a can supporting head, a crimping hea-d including a body having a frusto-conical recess in one face thereof and an annular series of bending and crimping segments arranged within the recess and having their outer faces bevelled to conform to the lateral wall of the recess, means to restore the annular segments to normal position after movement,V and means to move oneof said heads toward the other.

7. Ina machine of the class described. a can supporting head, a crimping head including a body having a frusto-conical recess in one face and an annular series of bending and crimping segments arranged within the recess and having their outer faces bevelled to conform to they lateral wall of the recess, said segments normally projecting from the recess for engagement by theY can supporting head, a central member having said segments connected thereto for slidable movement radially of the recess, means to support said member for limited movement inwardly and outwardly of the recess, and means to move one of said heads toward the other.

8. In a machine of the class described, a can supporting head, a crimping head including a body having a frusto-conical recess in one face and an annular series of bending and crimping segments arranged within the recess and having their outer faces bevelled to conform to the lateral wall of the recess, said segments normally projecting from the recess for engagement by the can supporting head, a central member having said segments connected thereto for slidable movement radially of the recess, means to support said member for limited iovement inwardly and outwardly of the recess, means to restore said segments and member to normal position after operation, and means to move one of said heads toward the other.

9. In a machine of the class describeda can supporting head, a crimping head including a body having a frusto-conical recess in one face and an annular series of bending and crimping segments arranged within the recess and having their outer faces bevelled to conform to the lateral wall of the recess, said segments normally projecting from the recess for engagement by the can supporting' head, a central member having said segments connected thereto for slidable movement radially of the recess, said member' having its outer portion formed to constitute a can head supporting die, means to support said member for limited movement inwardly and outwardly of the recess, and means to move one of said heads toward the other.

l0. In a machine of the class described, a can supporting head, a crimping head including a body having a frusto-conical recessin one face and an annular series of bending and crimping segments arranged within the recess and having their outer faces bevelled to conform to the lateral wall of the recess, said segments normally projecting from the recess for engagement by the can supporting head, a central member having said segments connected thereto for slidable movement radially of the recess,

said member having its outer' portion formed to constitute a can head supporting die, means to support said member for limited movement inwardly and outwardly of the recess, means to restore said segments and member to normal position after operation, and means to move one of said heads toward the other.

ll. In a machine of the class described, a crimping head including a body having a frusto-conical recess in one face and an annular series of bending and crimping segments arranged within the recess and having their outer faces bevelled to conform to the lateral wall of the recess, said segments normally projecting from the recess and having circumferential grooves on their inner sides, a can top supporting die mounted centrally of the recess and movable inwardly and outwardly thereof, a flange on said die entering said grooves to permit radial movement of the segments with respect to the die, limit screws passing slidably through the face of the body opposite the recess and engaging the die, a can supporting head movable into vand out of engagement with the segments,

and means to move one of said heads toward the other.

l2. In a machine of the class described, a crimping head including a body having a. frusto-conical recess in one face and an annular series of bending and crimping segments arranged within the recess and having their outer faces bevelled to conform to the lateral wall of the recess, said segments normally projecting from the recess and having circumferential grooves on their' inner sides, a can top supporting die mounted centrally of the recess and movable inwardly and outwardly thereof, a flange on said die entering said grooves to permit radial movement of the segments with respect to the die, limit screw passing slidably through' the face of the body opposite the recess and engaging the die, a can supporting head movable into and out of engagement with the segments, springs surrounding the screws between the body and die and urging the die outwardly of the recess, other springs between the die and segments urging the latter outwardly, and means to move one of said heads toward the other.

In testimony whereof I aiiiX my signature.

FREDERICK COATES. 

